Bump sentencepiece from 0.1.97 to 0.2.0 (#1342)

Bumps [sentencepiece](https://github.com/google/sentencepiece) from 0.1.97 to 0.2.0.
- [Release notes](https://github.com/google/sentencepiece/releases)
- [Commits](google/sentencepiece@v0.1.97...v0.2.0)

---
updated-dependencies:
- dependency-name: sentencepiece
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

setup.py

@@ -62,7 +62,7 @@
     'torch>=2.3.0,<2.4',
     'datasets>=2.19,<2.20',
     'fsspec==2023.6.0',  # newer version results in a bug in datasets that duplicates data
-    'sentencepiece==0.1.97',
+    'sentencepiece==0.2.0',
     'einops==0.8.0',
     'omegaconf>=2.2.3,<3',
     'slack-sdk<4',